- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll
- stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close
- utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP),
add deferred drain in both Phase J and L
- stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39,
exchange ed25519_pubkey in both handshake directions
- etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in
etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb
- chat_sync.c: fix lk->conn NULL dereference for TCP links
- test_stcp.c: update stcp_server_create/stcp_client_connect callsites
- tools/chat_tcp_test: change transport udp→tcp
- Add tools/chatgui/libutun/CMakeLists.txt — builds libuasync (from lib/*.c)
and libutun (from src/*.c except utun.c) as static libraries
- All C code compiled as C99, linked into chatgui C++ binary
- Include paths and defs match autotools build
- chatgui CMakeLists.txt: add_subdirectory(libutun), link utun library
- Fix zxing-cpp docs/ directory issue
evgeny
Evgeny